<template>
  <div class="login_page fillcontain">
    <transition name="form-fade" mode="in-out">
      <section class="form_contianer" v-show="showLogin">
        <div class="manage_tip">
          <p>后台管理系统</p>
        </div>
        <el-form :model="loginForm" :rules="rules" ref="loginForm">
          <el-form-item prop="username">
            <el-input v-model="loginForm.username" placeholder="用户名"><span>dsfsf</span></el-input>
          </el-form-item>
          <el-form-item prop="password">
            <el-input type="password" placeholder="密码" v-model="loginForm.password"></el-input>
          </el-form-item>
          <el-form-item>
            <el-button type="primary" @click="submitForm('loginForm')" class="submit_btn">登陆</el-button>
          </el-form-item>
        </el-form>
      </section>
    </transition>
  </div>
</template>

<script>
import {login} from '@/api/getData'
import {mapActions, mapState} from 'vuex'
export default {
  data () {
    return {
      loginForm: {
        username: '',
        password: ''
      },
      rules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' }
        ]
      },
      showLogin: false
    }
  },
  mounted () {
    this.showLogin = true
    if (!this.adminInfo.id) {
      this.getAdminData()
    }
  },
  computed: {
    ...mapState(['adminInfo'])
  },
  methods: {
    ...mapActions(['getAdminData']),
    async submitForm (formName) {
      this.$refs[formName].validate(async (valid) => {
        if (valid) {
          const res = await login({user_name: this.loginForm.username, password: this.loginForm.password})
          if (res.status === 1) {
            this.$message({
              type: 'success',
              message: '登录成功'
            })
            this.$router.push('manage')
          } else {
            this.$message({
              type: 'error',
              message: res.message
            })
          }
        } else {
          this.$notify.error({
            title: '错误',
            message: '请输入正确的用户名和密码',
            offset: 100,
            duration: 1000
          })
          return false
        }
      })
    }
  },
  watch: {
    adminInfo: function (newValue) {
      if (newValue.id) {
        this.$message({
          type: 'success',
          message: '检测到您之前登录过，将自动登录'
        })
        this.$router.push('manage')
      }
    }
  }
}
</script>

<style lang="less" scoped>
  @import '../style/mixin';
  .login_page{
    background-color: #324057;
  }
  .manage_tip{
    position: absolute;
    width: 100%;
    top: -100px;
    left: 0;
    p{
      font-size: 34px;
      color: #fff;
    }
  }
  .form_contianer{
    .wh(320px, 210px);
    .ctp(320px, 210px);
    padding: 25px;
    border-radius: 5px;
    text-align: center;
    background-color: #fff;
    .submit_btn{
      width: 100%;
      font-size: 16px;
    }
  }
  .tip{
    font-size: 12px;
    color: red;
  }
  .form-fade-enter-active, .form-fade-leave-active {
    transition: all 1s;
  }
  .form-fade-enter, .form-fade-leave-active {
    transform: translate3d(0, -50px, 0);
    opacity: 0;
  }
</style>
